UKL1A221MPD

The UKL1A221MPD is an aluminum electrolytic capacitor in a radial‑lead can from Nichicon's UKL low‑leakage series. It delivers 220 µF nominal capacitance at a 10 V rating with radial through‑hole packaging suitable for discrete board power and signal applications.

Designed as part of Nichicon’s standard low leakage current family and compliant with RoHS, this part is specified for audio applications and for operation over a –40°C to +85°C temperature range. Note: this part is End Of Life and is not recommended for new designs.

Key Features

• Capacitance & Tolerance — 220 µF nominal with ±20% tolerance.
• Rated Voltage — 10 V DC rating for low‑voltage audio and power circuits.
• Low Leakage Current — Low leakage characteristic of the UKL series; part‑specified leakage is 4.4 µA.
• Ripple Current Capability — 310 mA at 120 Hz (low frequency) and 465 mA at 10 kHz (high frequency), supporting AC ripple and filtering demands.
• Reliability / Life — Endurance of 2000 hours at 85°C per the specified lifetime condition.
• Operating Temperature — Rated for –40°C to +85°C operation.
• Package & Dimensions — Radial can, physical size φ8 × 11.5 mm (L), overall dimensions L: 1.15 × D: 0.8 cm, lead spacing 3.5 mm with 0.5 mm tolerance.
• Polarized — Designed for polarized circuit placement.
• Packaging Options — Available in bulk (no terminal forming) or bag packing.
• RoHS Compliance — Compliant with RoHS directive requirements.

Typical Applications

• Audio — Intended for audio circuitry where low leakage, appropriate capacitance and ripple handling contribute to stable coupling, decoupling and filter functions.

Unique Advantages

• Low leakage for stable biasing — Reduced leakage current helps maintain DC bias and reduces drift in audio signal paths.
• Frequency‑span ripple handling — Specified ripple current at both 120 Hz and 10 kHz supports performance across low and high ripple frequencies common in audio power rails.
• Compact radial form factor — φ8 × 11.5 mm can and 3.5 mm lead spacing provide a small, robust through‑hole solution for space‑constrained boards.
• Designed for elevated temperature endurance — 2000 hours at 85°C rating provides predictable life characteristics for sustained thermal environments.
• RoHS compliant — Simplifies regulatory compliance for assemblies and products requiring restricted substances adherence.

Why Choose UKL1A221MPD?

UKL1A221MPD is positioned as a compact, low‑leakage aluminum electrolytic solution for audio and related low‑voltage circuit needs. With defined ripple current ratings across frequencies, a 10 V working voltage, and a 220 µF capacitance, it provides a predictable, engineer‑friendly choice for through‑hole designs that require stable filtering and decoupling.

While the part offers the UKL series’ low‑leakage attributes and a documented endurance at 85°C, please note this specific part is End Of Life and is not recommended for new designs. It remains a suitable option for maintenance, spare‑parts, or legacy system support where continuity of existing designs is required.

Request a quote or submit an availability and lead‑time inquiry to discuss current stock, alternative part suggestions, or options for legacy support.